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Species: Pomadasys macracanthus, Longspine grunt

All Families:   All Genera:   All Species:

relatively deep
4-5 faint bars
soft D & A - membranes scaled
LL 48-50
4.5-5.5 oblique rows scales LL to D origin
upper operculum: dark spot
pectoral to A origin
A: 2nd spine long, thick

Pomadasys macracanthus (Günther, 1864)

Longspine grunt

Body oblong, strongly compressed; forehead profile ~ oblique; mouth not reaching under front of eye, inside not red, lips thin; chin with 2 pores at front and 2 inside hole behind, plus a longitudinal groove; preopercle serrated in juveniles, almost smooth in adults; dorsal fin XII (rarely XI), 13, moderately notched; anal III, 7-8, second anal spine long and stout, thicker than 3rd; pectoral fins very long, reaching to level of anus; 1 row of scales on membrane between soft dorsal and anal rays; 41-46 pored lateral line scales; 3.5-4.5 oblique rows of scales between lateral line and origin of dorsal fin.

Silvery with 4-5 indistinct dark bars on side (sometimes absent in adults); a dark spot on the upper operculum.

Maximum size, 35 cm.

Habitat: coastal seas on sandy or muddy bottoms, entering brackish estuaries and river mouths.

Depth: 0-20 m.

Southern Baja and the Gulf of California to Ecuador.

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  • Brackish
  • Non Marine
  • Freshwater
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom + water column
  • Bottom
  • Near Bottom
  • Mangrove
  • Estuary
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Water column
  • Mud
  • Freshwater
  • Sand & gravel
  • Soft bottom only
FishBase Habitat
  • Bentho-Pelagic
Feeding Group
  • Carnivore
  • No Data
  • Mobile benthic crustacea (shrimps/crabs)
  • Data
  • Mobile benthic gastropods/bivalves
  • Octopus/squid/cuttlefish
  • Mobile benthic worms
Egg Type
  • Pelagic larva
  • No data
  • Pelagic
Global Endemism
  • East Pacific endemic
  • Tropical Eastern Pacific (TEP) endemic
  • All species
Regional Endemism
  • Continent
  • Continent only
  • All species
  • 3 provinces (Cortez + Mexican + Panamic) endemic
  • Continental TEP endemic
  • TEP endemic
  • Resident
Climate Zone
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
  • North Temperate (Californian Province &/or Northern Gulf of California)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 35
Depth Range Min
  • 0
Depth Range Max
  • 20